Discover and read the best of Twitter Threads about #amoc
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So why do we see such crazy heat extremes after “only” 1.3 degrees C #GlobalWarming? A short 🧵.
1. Land areas have warmed much more than ocean, and the global average temperature consists of 70% ocean surface. Check out your country here: berkeleyearth.org
1. Land areas have warmed much more than ocean, and the global average temperature consists of 70% ocean surface. Check out your country here: berkeleyearth.org
2. Extremes can change much more than the long-term average, because weather patterns change.
3. Ocean circulation also changes with #GlobalWarming: the Atlantic ‘cold blob’ due to #AMOC slowdown tends to increase summer heat and drought in Europe. See Efi Rousi’s thread:
You want to understand some background to the latest study finding that the #AMOC aka #GulfStream System is losing stability? Here some reading recommendations! (Thread)
realclimate.org/index.php/arch…
realclimate.org/index.php/arch…
The difference between RCP8.5 (high CO2, “business as usual”) and RCP2.6 (aggressive decarbonization) is striking. Under 2.6, we change for 30 years, then stabilize. Under 8.5, the changes keep coming and every year gets harder and harder.
ipcc.ch/site/assets/up…
ipcc.ch/site/assets/up…
I hadn’t thought much about deoxygenation of the ocean until #NCA4. This is an area of research to watch. I suspect many observed temperature impacts on ocean life are actually related to oxygen. @OceanForecaster @JohnFBruno
1/n Thread: Science Mag has a new study reporting measurements of the Atlantic overturning circulation #AMOC from the #OSNAP project. They find that this circulation happens mostly towards waters east of Greenland rather than the Labrador Sea in the west. washingtonpost.com/climate-enviro…
2/n I do not find that surprising. At least since the early 1990s the Greenland-Norwegian Seas were considered the most important site for Atlantic deep-water formation. Water there reaches the highest density, and flows over the sills near Iceland. (Graph Rahmstorf Nature 99)
3/n This “overflow” was measured by Bogi Hansen and others and amounted to about 6 Sv, and was also captured well in models (e.g. nature.com/articles/natur…)
